Earth’s Inner Core ‘Only’ 1 – 1.5 Billion Year Old, New Study Says

The Earth’s deepest layer – the inner core – was formed between a billion and 1.5 billion years ago as it ‘froze’ from the surrounding molten iron outer core, according to a new study published today in the journal Nature. The Earth’s inner core is a ball of solid iron smaller than the Moon which [...] —> Read More